./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:59:03,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:03,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:04,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:04,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:04,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:04,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:04,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:04,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:04,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:04,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:04,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:04,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:04,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:04,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:04,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:04,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:04,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:04,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:04,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:04,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:04,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:04,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:04,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:04,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:04,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:04,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:04,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:04,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:04,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:04,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:04,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:04,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:04,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:04,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:04,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:04,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:04,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:04,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:04,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:04,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:04,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 03:59:04,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:04,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:04,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:04,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:04,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:04,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:04,120 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:04,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:04,121 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:04,121 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:04,122 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:04,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:04,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:04,123 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:04,123 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:04,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:04,124 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:04,124 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:04,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:04,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:59:04,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:59:04,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:04,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:59:04,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:04,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:04,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:04,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:04,127 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 03:59:04,128 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:59:04,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:04,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:04,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:04,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:04,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:04,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:04,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:04,130 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:04,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:04,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:04,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:04,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:04,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:04,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:04,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 [2022-11-03 03:59:04,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:04,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:04,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:04,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:04,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:04,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-03 03:59:04,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/data/cdb50df56/d01b984165e641418388ccf46f864c8a/FLAG980f8e95a [2022-11-03 03:59:05,290 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:05,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-03 03:59:05,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/data/cdb50df56/d01b984165e641418388ccf46f864c8a/FLAG980f8e95a [2022-11-03 03:59:05,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/data/cdb50df56/d01b984165e641418388ccf46f864c8a [2022-11-03 03:59:05,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:05,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:05,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:05,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:05,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:05,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:05" (1/1) ... [2022-11-03 03:59:05,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f3e0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:05, skipping insertion in model container [2022-11-03 03:59:05,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:05" (1/1) ... [2022-11-03 03:59:05,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:05,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:06,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-03 03:59:06,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:06,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:06,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-03 03:59:06,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:06,508 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06 WrapperNode [2022-11-03 03:59:06,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:06,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:06,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:06,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:06,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,612 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 261 [2022-11-03 03:59:06,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:06,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:06,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:06,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:06,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,663 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:06,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:06,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:06,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:06,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (1/1) ... [2022-11-03 03:59:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:06,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:06,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603c40f3-ba99-4f1f-9f83-365888968698/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:59:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:59:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:59:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:59:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 03:59:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:59:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-03 03:59:06,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-03 03:59:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:59:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:06,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:06,779 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:59:07,016 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:07,019 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:07,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:07,645 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:07,645 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-03 03:59:07,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:07 BoogieIcfgContainer [2022-11-03 03:59:07,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:07,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:07,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:07,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:07,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:05" (1/3) ... [2022-11-03 03:59:07,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32136050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:07, skipping insertion in model container [2022-11-03 03:59:07,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:06" (2/3) ... [2022-11-03 03:59:07,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32136050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:07, skipping insertion in model container [2022-11-03 03:59:07,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:07" (3/3) ... [2022-11-03 03:59:07,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2022-11-03 03:59:07,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:59:07,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:07,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-03 03:59:07,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:59:07,813 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-03 03:59:07,881 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:59:07,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 275 transitions, 558 flow [2022-11-03 03:59:07,904 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 275 transitions, 558 flow [2022-11-03 03:59:07,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 558 flow [2022-11-03 03:59:08,085 INFO L130 PetriNetUnfolder]: 42/386 cut-off events. [2022-11-03 03:59:08,086 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-03 03:59:08,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 386 events. 42/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1592 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2022-11-03 03:59:08,114 INFO L118 LiptonReduction]: Number of co-enabled transitions 21294 [2022-11-03 03:59:20,784 INFO L133 LiptonReduction]: Checked pairs total: 198523 [2022-11-03 03:59:20,785 INFO L135 LiptonReduction]: Total number of compositions: 238 [2022-11-03 03:59:20,796 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 110 places, 131 transitions, 270 flow [2022-11-03 03:59:21,049 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2841 states, 2781 states have (on average 2.428982380438691) internal successors, (6755), 2840 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:21,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:21,094 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ec3308b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:21,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-03 03:59:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 2841 states, 2781 states have (on average 2.428982380438691) internal successors, (6755), 2840 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:59:21,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:21,115 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 03:59:21,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-03 03:59:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1133418704, now seen corresponding path program 1 times [2022-11-03 03:59:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:21,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536901399] [2022-11-03 03:59:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:59:21,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:59:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:59:21,464 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:59:21,467 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:59:21,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-03 03:59:21,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-03 03:59:21,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-03 03:59:21,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-03 03:59:21,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-03 03:59:21,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-03 03:59:21,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-03 03:59:21,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-03 03:59:21,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-03 03:59:21,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-03 03:59:21,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-03 03:59:21,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-03 03:59:21,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-03 03:59:21,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-03 03:59:21,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-03 03:59:21,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-03 03:59:21,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-03 03:59:21,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:21,481 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:59:21,484 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 03:59:21,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 03:59:21,532 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 03:59:21,537 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:59:21,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 368 transitions, 754 flow [2022-11-03 03:59:21,538 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 368 transitions, 754 flow [2022-11-03 03:59:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 368 transitions, 754 flow [2022-11-03 03:59:21,703 INFO L130 PetriNetUnfolder]: 71/621 cut-off events. [2022-11-03 03:59:21,704 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 03:59:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 621 events. 71/621 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3089 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 388. Up to 12 conditions per place. [2022-11-03 03:59:21,757 INFO L118 LiptonReduction]: Number of co-enabled transitions 61152 [2022-11-03 03:59:36,881 INFO L133 LiptonReduction]: Checked pairs total: 550217 [2022-11-03 03:59:36,881 INFO L135 LiptonReduction]: Total number of compositions: 312 [2022-11-03 03:59:36,883 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 161 places, 193 transitions, 404 flow [2022-11-03 03:59:41,928 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135983 states, 135599 states have (on average 3.6085959335983304) internal successors, (489322), 135982 states have internal predecessors, (489322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:41,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:41,944 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ec3308b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:41,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-03 03:59:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 135983 states, 135599 states have (on average 3.6085959335983304) internal successors, (489322), 135982 states have internal predecessors, (489322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:59:42,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:42,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:42,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 03:59:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 593741928, now seen corresponding path program 1 times [2022-11-03 03:59:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:42,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564483615] [2022-11-03 03:59:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:59:42,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564483615] [2022-11-03 03:59:42,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564483615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:42,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:42,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:59:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147956229] [2022-11-03 03:59:42,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:42,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:59:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:59:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:59:42,479 INFO L87 Difference]: Start difference. First operand has 135983 states, 135599 states have (on average 3.6085959335983304) internal successors, (489322), 135982 states have internal predecessors, (489322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:45,645 INFO L93 Difference]: Finished difference Result 135983 states and 404544 transitions. [2022-11-03 03:59:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:59:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:59:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:47,204 INFO L225 Difference]: With dead ends: 135983 [2022-11-03 03:59:47,205 INFO L226 Difference]: Without dead ends: 135947 [2022-11-03 03:59:47,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:59:47,217 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:47,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:59:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135947 states. [2022-11-03 03:59:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135947 to 135947. [2022-11-03 03:59:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135947 states, 135567 states have (on average 2.983292394166722) internal successors, (404436), 135946 states have internal predecessors, (404436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135947 states to 135947 states and 404436 transitions. [2022-11-03 03:59:54,139 INFO L78 Accepts]: Start accepts. Automaton has 135947 states and 404436 transitions. Word has length 9 [2022-11-03 03:59:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 135947 states and 404436 transitions. [2022-11-03 03:59:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 135947 states and 404436 transitions. [2022-11-03 03:59:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:59:54,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:54,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:54,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:59:54,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 03:59:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1196705429, now seen corresponding path program 1 times [2022-11-03 03:59:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:54,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497232219] [2022-11-03 03:59:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:59:54,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:54,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497232219] [2022-11-03 03:59:54,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497232219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:54,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:54,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:59:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403742801] [2022-11-03 03:59:54,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:54,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:59:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:59:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:59:54,604 INFO L87 Difference]: Start difference. First operand 135947 states and 404436 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:58,210 INFO L93 Difference]: Finished difference Result 189072 states and 559177 transitions. [2022-11-03 03:59:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 03:59:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:59,279 INFO L225 Difference]: With dead ends: 189072 [2022-11-03 03:59:59,280 INFO L226 Difference]: Without dead ends: 189072 [2022-11-03 03:59:59,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:59:59,281 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 232 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:59,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 283 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:59:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189072 states. [2022-11-03 04:00:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189072 to 155426. [2022-11-03 04:00:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155426 states, 155067 states have (on average 2.9791638453055778) internal successors, (461970), 155425 states have internal predecessors, (461970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155426 states to 155426 states and 461970 transitions. [2022-11-03 04:00:06,167 INFO L78 Accepts]: Start accepts. Automaton has 155426 states and 461970 transitions. Word has length 10 [2022-11-03 04:00:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:06,170 INFO L495 AbstractCegarLoop]: Abstraction has 155426 states and 461970 transitions. [2022-11-03 04:00:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:00:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 155426 states and 461970 transitions. [2022-11-03 04:00:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:00:06,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:06,178 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-03 04:00:06,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:00:06,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 04:00:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1456635126, now seen corresponding path program 1 times [2022-11-03 04:00:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:06,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833639355] [2022-11-03 04:00:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:06,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:06,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:00:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:06,252 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:00:06,252 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:00:06,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-03 04:00:06,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-03 04:00:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-03 04:00:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-03 04:00:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-03 04:00:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-03 04:00:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-03 04:00:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-03 04:00:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-03 04:00:06,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-03 04:00:06,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-03 04:00:06,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-03 04:00:06,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-03 04:00:06,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-03 04:00:06,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-03 04:00:06,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-03 04:00:06,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-03 04:00:06,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-03 04:00:06,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-03 04:00:06,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-03 04:00:06,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-03 04:00:06,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-03 04:00:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:00:06,260 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 04:00:06,260 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 04:00:06,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 04:00:06,316 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 04:00:06,322 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:00:06,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 461 transitions, 952 flow [2022-11-03 04:00:06,323 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 461 transitions, 952 flow [2022-11-03 04:00:06,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 461 transitions, 952 flow [2022-11-03 04:00:06,626 INFO L130 PetriNetUnfolder]: 105/901 cut-off events. [2022-11-03 04:00:06,626 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-03 04:00:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 901 events. 105/901 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4901 event pairs, 1 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 629. Up to 16 conditions per place. [2022-11-03 04:00:06,725 INFO L118 LiptonReduction]: Number of co-enabled transitions 117390 [2022-11-03 04:00:24,632 INFO L133 LiptonReduction]: Checked pairs total: 1084493 [2022-11-03 04:00:24,633 INFO L135 LiptonReduction]: Total number of compositions: 389 [2022-11-03 04:00:24,634 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 210 places, 251 transitions, 532 flow